Shandong Tongrui Mining Technology Co., Ltd.

Shandong Tongrui Mining Technology Co.,Ltd was founded in 2007 Tai an, Shandong, China. In 2011 we set up GSI(Ground Support Industries Co.,Ltd) for selling and promoting the products of under brand name Tightlok. Our office factory are very near to both Qingdao Tianjin Seaport, which makes ...

Telephone：0086-538-5050586Address：No.7 in North Road of Manzhuang Steel Market